MyWs62FaST4u

iTrader: (2)

http://www.quicktimeperformance.com/Downpipes/index.php

it says its coming soon!!!!! Oh Boy!

EPP

iTrader: (22)

Awesome! Bob

Got Me SOM

iTrader: (2)

that's pretty cool but any exhaust shop or skilled person can prob fab that up providing you have the cutout already. still pretty cool.

wonder if running an open exhaust would help out on a supercharged car.

engineermike

I don't think it helps S/C nearly as much as T/C. Has to do with e/i pressure ratio's.

Slowhawk

iTrader: (12)

Cutout's are easy to do on our cars anyway's.

I was hoping they started making Turbo headers by your post.

Somebody09

Seriosly...

What did I miss here? What has QTP done that requires a new post? Did this guy just discover the elecrtic cutout or something?

2002 Trans Am

I was just at the track with Barry (owner of QTP) and we were talking about turbos. He didn't say anything to me about making a DP for the F-Body and I don't think he will be. There are too many variations of downpipes for him to have a universal DP made.

Of course you could always buy his QTEC and have a shop fab the work.

Big Mike

iTrader: (4)

Barry should manufacture turbo manifolds for F-Body's. If they come out as good as his headers he'll be able to retire in 10 years!

52172

iTrader: (2)

that link only shows other applications it looks like they will not be making any downpipes for f bods they are making them for trucks and imports. there are just too many different kits for the fbod to be able to make a downpipe and make money on it.

ty_ty13

iTrader: (42)

exhaust flow is what S/C need the most... they have a way to get air in the motor very easily and need help getting it out....

the exhaust ports/valves and headers on blown motor are very important.

Turbo LS1 SS

iTrader: (7)

with my cutout open my car has insta spool...... HUGGGGGEEEE noticable difference. not that hard to do

engineermike

Not as much as you might think. You see, when you improve exhaust flow on a s/c engine, you reduce pressure in the exhaust port, which allows air/fuel to escape more easily during overlap. I have several test data points to back this up. Also, note that turbo motors make alot of power even though they will have 2x as much exhaust pressure as boost.

StoleIt

iTrader: (3)

How is this different from an electric cutout?

Phate

iTrader: (2)

+1

Hell, I am still waiting for someone to make a 4" boost activated cut-out.

ty_ty13

iTrader: (42)

you can control the events with a proper cam.... the flow still needs to be very good...

Camaro_Zach

iTrader: (19)

old news, been around for well over a year, probably 2. not commin for our cars "specifically"

as said earlier you can just put that style cutout on your existing exhaust setup.

FormulaFire

iTrader: (20)

I just dumped my down pipe and was done with it!

NoGo

iTrader: (2)

I don't want to belabor this thread, but it isn't because of mixture escaping. You don't make big gains on a supercharger because the boost drops off as exhaust back pressure drops. The loss in inlet boost often offsets any gains made with a reduction in pumping losses. To get the full gain with a supercharge you would have to open the cutout then rebelt the supercharger back to the target boost. Turbo's do this automatically through waste gate control so you pick up a boatload of HP instantly with a turbo.

TINKRD

iTrader: (27)

someone should create an electric cut-out for the STS kit. lol

Toonz

iTrader: (6)

Honestly I loved my electric cutout on my formula, but I drove with it open 90% of the time. The only time I closed it was cruising the neighborhood back to the house, and if a cop happened to be sitting next to me at a light. BUT, when it was closed, it leaked. I did the maintenance on it, kept it cleaned and tightened, but it still leaked. I think they all will over time. I'm sure this one will too...

I agree with FormulaFire... just dump it and be done with it.